| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 060646000 | Including start up, shut down, cleaning, protective or maintenance procedure | 53 |
| 20080229746 | Method for protecting the hot gas parts of a gas turbine installation from overheating and for detecting flame extinction in the combustion chamber - A method for protecting a gas turbine installation from overheating and for detecting flame extinction in the combustion chamber is described, in which air is compressed in a compressor unit and, after being admixed with fuel, is ignited in the form of a fuel/air mixture in a combustion chamber and is burnt, thus giving rise to a hot gas flow which sets a turbine stage in rotation downstream of the combustion chamber so as to perform expansion work. The pressure upstream of the turbine stage, that is to say the pressure p | 09-25-2008 |
| 20090126365 | Method for starting a steam turbine installation - The invention relates to a method for starting a steam turbine installation which comprises at least one steam turbine and at least one steam-generating installation for generating steam for driving the steam turbines, the steam turbine installation having at least one casing component, which has an initial starting temperature of more than 250° C., the temperature of the steam and of the casing component being continually measured, and the casing component of the steam turbine installation being supplied with steam from the starting time point onwards. The starting temperature of the steam is lower than the temperature of the casing component and the temperature of the steam is increased with a start transient and the staring temperature is chosen such that the change in temperature per unit of time of the casing component lies below a predefined limit. The temperature of the casing component initially decreases, until a minimum is reached and then increases. | 05-21-2009 |
| 20090145128 | GEARED BOILER FEED PUMP DRIVE - A geared fluid drive arrangement in which a constant speed motor is used to start a “full-size” boiler feed pump, and is able to operate the pump at a limited speed and correspondingly limited power adequate to fill, pressurize and feed water to a boiler such as would be used for an electrical generating plant to start-up and to operate stably at part load, but not necessarily full load. After the boiler is operating stably, steam from the boiler or from an extraction point of the main turbine is admitted to a mechanical drive steam turbine in order to drive the same “full-size” pump to the normal operating range. | 06-11-2009 |
| 20090158738 | METHODS AND APPARATUS FOR STARTING UP COMBINED CYCLE POWER SYSTEM - Methods and apparatus for fast starting and loading a combined cycle power system are described. In one example embodiment, a method for starting a combined cycle power generation system is provided. The system includes a gas turbine and a steam turbine. The method includes loading the gas turbine at a loading rate that is facilitated to be at an increased loading rate, setting a first predetermined value for a bypass pressure set point for high-pressure steam, and increasing the first predetermined value to a second predetermined value at a predetermined rate. | 06-25-2009 |
| 20090249788 | Method for Warming-Up a Steam Turbine - The invention relates to a method for heating a steam turbine comprising a high-pressure turbine section and a medium-pressure turbine section and/or a low-pressure turbine section. Said method is characterized by the essential aspect that the high-pressure turbine section is impinged upon by steam having relatively great conductivity while the medium-pressure turbine section or the low-pressure turbine section remains closed during said impingement following a cold start. As soon as the conductivity drops below a certain value, the medium-pressure turbine section or the low-pressure turbine section is also impinged upon by steam. | 10-08-2009 |
| 20090288415 | Method for Warming-Up a Steam Turbine - There is described a method for heating a steam turbine comprising a medium-pressure turbine section and/or a low-pressure turbine section, the discharge end of the medium-pressure turbine section being provided with a catchment device. Steam penetrating the medium-pressure turbine section during a starting process is retained at an outlet by means of a catchment device in such a way that the pressure of the steam increases in the medium-pressure turbine section. The steam that is discharged from the medium-pressure turbine section is retained, thus increasing the pressure and the temperature of the steam. Heat transfer from the steam to the thick-walled parts located on the medium pressure turbine section and the shaft of the medium-pressure turbine section is augmented, thus reducing the starting time of the steam turbine. | 11-26-2009 |
| 20090288416 | TURBINE SYSTEM AND METHOD FOR STARTING-CONTROLLING TURBINE SYSTEM - The present invention provides a turbine system which can start a turbine, while controlling thermal stress generated in a turbine rotor and an expansion difference, due to thermal expansion, between a casing and the turbine rotor, to be lower than defined values, respectively. The turbine system ( | 11-26-2009 |
| 20100043438 | SYSTEM AND METHOD OF COOLING TURBINES - A method of cooling a turbine having internal moving components to a predetermined temperature is disclosed. The method comprises taking the turbine offline. While the turbine is offline, nitrogen is flowed through the turbine until the turbine reaches the predetermined temperature while controlling the flow of nitrogen from at least one injection point to prevent damage to the moving components of the turbine by achieving uniform cooling of the internal moving components. Then the flow of nitrogen is stopped. A method and assembly for cleaning a turbine having a deposit formed on an internal surface of the turbine is also disclosed. | 02-25-2010 |
| 20100205966 | METHOD AND APPARATUS FOR STARTING A REFRIGERANT SYSTEM WITHOUT PREHEATING THE OIL - A rankine cycle system, which includes a turbine for driving a generator by way of a gearbox having an oil sump, is adapted to have the oil heated relatively quickly by causing a mixture of hot refrigerant gases from the evaporator and the oil from the low portion of the turbine to be mixed in an eductor and flow to the oil sump for heating the oil. | 08-19-2010 |
| 20100257860 | Air Vent in Main Steam Duct of Steam Turbine - A power plant including a steam turbine, and a steam turbine exhaust duct configured to deliver uncontaminated fluid from the steam turbine to downstream components of the power plant. The steam turbine exhaust duct includes a steam turbine exhaust duct isolation valve selectively configured to prevent fluid communication between the steam turbine exhaust duct and the downstream components of the power plant, and a steam turbine exhaust duct vent with a steam turbine exhaust duct vent valve. The steam turbine exhaust duct vent is configured to deliver contaminated fluid from the steam turbine exhaust duct to a fluid sink upon opening of the exhaust duct vent valve. | 10-14-2010 |
| 20110011090 | METHOD FOR STARTING A CONTINUOUS STEAM GENERATOR - A method for starting a continuous steam generator is provided. The steam generator includes a combustion chamber provided with a plurality of burners, a water-steam separation device that is mounted downstream of evaporator tubes of the water-steam separation device on a flow-medium side. The amount of water flowing into the water-steam separation device during a starting process is kept to a minimum. The firing power of at least one of the burners is adjusted in accordance with a filling level characteristic value of the water-steam separation device. | 01-20-2011 |
| 20110030373 | Air start steam engine - A method and system for an external combustion engine operable using at least two different working fluids to be supplied to an engine to cause it to do mechanical work. The engine is started by providing a compressed gaseous working fluid at a sufficient pressure to the engine. At the same time the compressed gaseous working fluid is provided to the engine, a second working fluid that is liquid at ambient temperatures is provided to a heater to be heated. The second working fluid is heated to its boiling point and converted to pressurized gas form. Once the pressure is increased to a sufficient level, the second working fluid is injected into the engine to generate power, and the supply of the first working fluid may be stopped. After expansion in the engine, the working fluids are is exhausted from the engine, and the second working fluid may be condensed for separation from the first working fluid. The initial compressed fluid is recompressed for later use. Control circuitry controls the admission of the first and second working fluids responsive to monitoring the load on the engine. | 02-10-2011 |
| 20110041503 | Turbine Protection Device - An object of the present invention is to provide a turbine protection device which can interrupt backflow from a deaerator to a turbine completely even if a check valve provided between the deaerator and the turbine can not interrupt the steam flow between the deaerator and the turbine completely. In order to achieve the above object, a control unit sends commands to a shutdown valve device so as to close the shutdown valve device when a differential pressure resulted from subtracting a pressure of a extraction steam from a pressure within the deaerator becomes greater than or equal to a first predetermined value. As a result, the backflow from the deaerator to the turbine is interrupted by a stop valve of the shutdown valve device. | 02-24-2011 |
| 20110113779 | Carbon Dioxide Capture Interface and Power Generation Facility - An interface for a pressurized fluidized bed combustion facility is disclosed that enables future addition of carbon dioxide capture technology to capture facility flue gas emissions. The interface includes a gas to water pressurized heat recovery steam generator to cool facility flue gas and provide steam to the facility steam turbine generator. A VFD motor and flue gas expander are coupled to a combustion air compressor to energize the facility. The expander is synchronized over a SSS-clutch to drive the compressor. The interface in combination with carbon capture technology and methods for conditioning flue gas are also disclosed. | 05-19-2011 |
| 20110146276 | METHOD OF STARTING A STEAM TURBINE - The present invention has the technical effect of reducing the start-up time associated with starting a steam turbine. Embodiments of the present invention provide a new methodology for reducing the steam-to-metal temperature mismatch present during the start-up of a steam turbine. Essentially, embodiments of the invention may raise the pressure of the steam upstream of an admission valve associated with a High Pressure (HP) section of a steam turbine. The initial high pressure of the steam may reduce the enthalpy of steam, reducing temperature of the steam admitted to the HP section. | 06-23-2011 |
| 20110209479 | Systems and Methods for Prewarming Heat Recovery Steam Generator Piping - The present application describes a heat recovery steam generator. The heat recovery steam generator may include a superheater, a first turbine section, a first main steam line in communication with the superheater and the first turbine section, and a first prewarming line positioned downstream of the first main steam line such that a flow of steam from the superheater preheats the first main steam line without entry into the first turbine section. | 09-01-2011 |
| 20110265475 | METHOD AND APPARATUS FOR COLD STARTING A STEAM TURBINE - The disclosure relates to a method and apparatus for cold starting a steam turbine by preheating a steam turbine component using eddy currents. The process includes providing an electrically conducting steam turbine component, an electro-magnetic coil, and a supply of AC to the coil. The coil is located relative to the component so that the coil is capable of forming eddy currents in the component. In this location, an AC current is passed through the coil thus heating the component. | 11-03-2011 |
| 20110308251 | Method for heating a turbine shaft - A method for heating a turbine shaft is provided. The turbine shaft is heated by spraying warm water from a supply pump or from a pre-heating section. A steam turbine is also provided. The steam turbine includes a housing, wherein injection nozzles for injecting the water are arranged within the housing. | 12-22-2011 |
| 20120023945 | METHOD AND DEVICE FOR COOLING STEAM TURBINE GENERATING FACILITY - In a steam turbine | 02-02-2012 |
| 20120131919 | DRIVEN STARTER PUMP AND START SEQUENCE - Various thermodynamic power-generating cycles are disclosed. A turbopump arranged in the cycles is started and ramped-up using a starter pump arranged in parallel with the main pump of the turbopump. Once the turbopump is able to self-sustain, a series of valves may be manipulated to deactivate the starter pump and direct additional working fluid to a power turbine for generating electrical power. | 05-31-2012 |
| 20120151921 | METHOD FOR STARTING A TURBOMACHINE - A method for increasing the operational flexibility of a turbomachine during a startup phase is provided. The turbomachine may include a first section, a second section, and a rotor disposed within the first section and the second section. The method may determine an allowable range of a physical parameter associated with the first section and/or the second section. The method may modulate a first valve and/or a second valve to allow steam flow into the first section and the second section respectively, wherein the modulation is based on the allowable range of the physical parameter. In addition, the physical parameter allows the method to independently apportion steam flow between the first section and the second section of the turbomachine, during the startup phase. | 06-21-2012 |
| 20120151922 | STEAM TURBINE OVERSPEED PROTECTION METHOD AND SYSTEM - A method and system is disclosed for generating a steam turbine overspeed control system fault alert. The method can include providing an overspeed control system with a control valve configured and located to adjust a speed of the steam turbine, the control valve having a control position. The method can also include monitoring the control position of the control valve and detecting a deloading event. Upon detection of a deloading event, a control system fault alert is generated when the control valve does not achieve a predefined control position within a predefined time from the deloading event. | 06-21-2012 |
| 20130152588 | METHOD AND APPARATUS FOR CONTROLLING OUTPUT OF PRESSURE SETTING SIGNAL TO AUTOMATICALLY CONTROL STEAM BYPASS CONTROL SYSTEM, AND METHOD AND APPARATUS FOR AUTOMATICALLY CONTROLLING STEAM BYPASS CONTROL SYSTEM BY USING THE PRESSURE SETTING SIGNAL - An apparatus for controlling an output of a pressure setting signal to automatically control a steam bypass control system includes a pressure setting signal output unit for outputting a pressure setting signal according to a cold leg temperature of a reactor coolant; a first logic value output unit for outputting a first logic value that is changed according to reactor power; a second logic value output unit for outputting a second logic value that is changed according to a temperature difference between an average temperature of the reactor coolant and a reference temperature; a NAND gate circuit unit for outputting an inverse logic value according to the first and second logic values; and a first output control unit for controlling whether to output the pressure setting signal according to the inverse logic value of the NAND gate circuit unit. | 06-20-2013 |
| 20130174550 | SYSTEMS AND METHODS FOR COLD STARTUP OF RANKINE CYCLE DEVICES - A Rankine cycle device includes a heat exchanger for supplying heat to a working fluid and an expansion device for expanding the working fluid. A valve is disposed between the heat exchanger and the expansion device and a cooling device is reduces a temperature of the working fluid. A pump moves the working fluid through the Rankine cycle device and a sensor is used to sense a pressure of the working fluid. A controller is operable to open the valve based upon the sensed pressure of the working fluid. | 07-11-2013 |
| 20130305720 | SYSTEMS AND METHODS FOR ACTIVE TEMPERATURE CONTROL IN STEAM TURBINE - Systems and methods for actively controlling the temperature in at least portions of a steam path associated with a steam turbine are disclosed. An active temperature control unit is configured to activate one or more attemperators to maintain temperatures in at least a portion of the steam path below a pre-determined threshold. By maintaining the temperature, those portions of the steam path may use less expensive materials. | 11-21-2013 |
| 20140000259 | METHOD FOR QUICKLY CONNECTING A STEAM GENERATOR | 01-02-2014 |
| 20140075941 | POWER GENERATING APPARATUS AND OPERATION METHOD THEREOF - Provided is a power generating apparatus capable of using power generated by a heat engine in combination with power of a driving source provided separately from the heat engine. In order to prevent a problem caused when activating and stopping the apparatus, the apparatus of the present invention includes a rotary machine driving source which generates a rotational driving force for a rotary machine and a heat engine which drives the rotary machine in cooperation with the rotary machine driving source, wherein the heat engine includes an expander which expands an evaporated working medium so as to generate a rotational driving force, the expander is provided with a bypass pipe which causes a working medium inlet of the expander to communicate with a working medium outlet thereof, and the bypass pipe is provided with an on-off valve which opens and closes the bypass pipe. | 03-20-2014 |
| 20140075942 | METHOD FOR OPERATING A STEAM CYCLE PROCESS - The invention relates to a method for operating a steam cycle process for using the heat of an internal combustion engine ( | 03-20-2014 |
| 20140096521 | Driven Starter Pump and Start Sequence - Aspects of the disclosure generally provide a heat engine system with a working fluid circuit and a method for starting a turbopump disposed in the working fluid circuit. The turbopump has a main pump and may be started and ramped-up using a starter pump arranged in parallel with the main pump of the turbopump. Once the turbopump reaches a self-sustaining speed of operation, a series of valves may be manipulated to deactivate the starter pump and direct additional working fluid to a power turbine for generating electrical power. | 04-10-2014 |
| 20140102100 | METHOD AND A SYSTEM OF ARRANGING TURBINE STAGES FOR SATURATED STEAM APPLICATIONS - The various embodiments herein provide a safety system for multiple turbine stages for saturated steam applications. The system comprises an isolating system having the inter-stage pipes for isolating the turbine stages and for transferring steam from one stage to another stage. A draining system is connected to each seal housing, inlet casing, exit casing and inter stage pipe to drain out a condensed steam vapor during a passage of steam between two successive stages. The draining system comprises drain pipes and a condensate pot for collecting and storing condensed steam. A thermodynamic trap is attached to the drain pipes and condensate pot for removing the condensed steam vapors collected in the condensate pot and drain pipes without significant steam leakage. A control system is provided for detecting and stopping high speed rotation of rotor disk in turbine assembly. | 04-17-2014 |
| 20140137555 | METHOD AND APPARATUS FOR ELECTRIC CO-FIRING OF POWER GENERATION PLANTS - The invention can be a method for maintaining an operating temperature of a power plant during shut-down periods. The method can include, during shut-down of the power plant, generating heat with an electric heater in order to approximately maintain the operating temperature of the power plant. The method can use electric power to operate the electric heater, where at least some of the electric power is from an electricity grid external to the power plant. The method can continue to generate heat with the electric heater as long as at least one of the electrical prices and the demand for electricity indicate that it will be more efficient to use electric power from the electricity grid to generate heat with the electric heater than to more completely shut down or restart the power plant. | 05-22-2014 |
| 20140165565 | STEAM TURBINE PLANT AND DRIVING METHOD THEREOF - A steam turbine plant capable of stably controlling start up of a steam turbine provided with a turbine bypass system and a driving method thereof are provided. A steam turbine plant | 06-19-2014 |
| 20140208750 | METHODS FOR REDUCING WEAR ON COMPONENTS OF A HEAT ENGINE SYSTEM AT STARTUP - Provided herein are heat engine systems and methods for starting such systems and generating electricity while avoiding damage to one or more system components. A provided heat engine system maintains a working fluid (e.g., sc-CO | 07-31-2014 |
| 20140238019 | SYSTEM AND METHOD FOR PRE-STARTUP AND POST-SHUTDOWN PREPARATIONS OF STEAM GENERATORS OR POWER PLANTS - System and method for pre-startup or post-shutdown preparation for such power plants are disclosed which are subject to frequent startups and shutdowns, such as a solar operated power plant. The system and method introduces an auxiliary fluid flow to be circulated in an opposite direction to a direction of normal working fluid flow responsible for producing electricity. That is, if the working fluid flow in a first direction for operating the power plant, than the auxiliary fluid flows in a second direction, opposite to the first direction. The auxiliary fluid flows in the second direction for a predetermined time and at a predetermined conditions through a plurality of superheater panel arrangements of solar receiver former to activation of the working fluid circuit, as pre-startup preparation of the power plant, and after cessation of the working fluid circuit, as post-shutdown preparation of the power plant, to attain predetermined conditions in the superheater. | 08-28-2014 |
| 20140290249 | Steam Turbine Power Plant - Disclosed is a steam turbine power plant adapted to start operating safely even if prediction accuracy of its startup constraints cannot be obtained. The system calculates predictive values and current values of startup constraints of a steam turbine from process variables of plant physical quantities, next calculates in parallel both a first control input variable for a heat medium flow controller based on predictive values, and a second control input variable for a main steam control valve based on the current values, and while preferentially selecting the first control input variable, if the first control input variable is not calculated, selects the second control input variable instead. After the selection of at least one of the first and second control input variables, the system outputs an appropriate command value to the heat medium flow controller and the main steam control valve according to the kind of selected control input variable. | 10-02-2014 |
| 20140360190 | STEAM TURBINE MOISTURE REMOVAL SYSTEM - A drain system ( | 12-11-2014 |
| 20140366538 | METHOD FOR A TEMPERATURE COMPENSATION IN A STEAM TURBINE - A structure and method are provided for preventing or at least minimizing thermally-induced structural distortions, such as may occur when a steam turbine is cooling down. The steam turbine may include an inner housing and an outer housing. An intermediate space is formed between the inner housing and the outer housing, and sealing steam may be injected into the intermediate space to avoid the formation of temperature strata in the interspace and thus prevent the outer housing from bowing. | 12-18-2014 |
| 20140373540 | Start Control Unit for Steam Turbine Plant - A start control unit for a steam turbine plant, wherein inputting a measured value of a steam temperature fed to a steam turbine, a measured value or an estimated value of a rotor temperature of the steam turbine, and a measured value of a casing temperature of the steam turbine, and controlling a steam flow rate so as to increase the steam flow rate fed to the steam turbine when a difference between the steam temperature and the rotor temperature is smaller than a first regulated value and a difference between the rotor temperature and the casing temperature is a second regulated value or larger. | 12-25-2014 |
| 20140373541 | METHOD AND APPARATUS FOR SAFETY OPERATION OF EXTRACTION STEAM TURBINE UTILIZED FOR POWER GENERATION PLANT - A safety operation method includes detecting a steam pressure inside a high-pressure casing of the high-pressure part and a steam pressure inside a low-pressure casing of the low-pressure part; obtaining a low-pressure casing limit pressure as a reference corresponding to a pressure of the high-pressure casing in each detection, on a basis of a pressure correlation line expressing a prescribed special relation between preset high-pressure casing pressure and low-pressure casing pressure of the extraction steam turbine; comparing the low-pressure casing limit pressure with the detected pressure of the low-pressure casing; and forcibly throttling an opening of the main steam control valve to reduce the flow rate of steam flowing into the high-pressure part, in a state in which the extraction control valves continue controlling an operation of the extraction steam pressure, when the detected pressure of the low-pressure casing is judged to be higher than the low-pressure casing limit pressure. | 12-25-2014 |
| 20150033741 | TURBINE FACILITY AND WATER TREATMENT METHOD FOR HEATER DRAINAGE WATER - Provided are a turbine facility, in which iron oxide particle scale that adheres to inner surfaces of boiler tubes and impedes heat transfer can be efficiently removed from heater drainage water; and a water treatment method for heater drainage water in the turbine facility. The turbine facility includes a boiler | 02-05-2015 |
| 20150047353 | METHOD FOR CONTROLLING A COOLING PROCESS OF TURBINE COMPONENTS - A method for controlling a cooling process of turbine components of a steam turbine shaft, wherein an air flow mixed with a water mist is used to cool the turbine components during a mist cooling phase (P | 02-19-2015 |
| 20150047354 | STEAM TURBINE SYSTEM AND METHOD FOR STARTING UP A STEAM TURBINE - A steam turbine system including a steam turbine is provided, the steam turbine having an incoming and an outgoing steam side, and a turbine housing with a feed-through for a turbine shaft with a seal, whereby a fluid flow through the feed-through can be minimized, and a steam conducting system to the seal is present. The steam turbine includes a first sub-section a second sub-section, and a connecting line to a region of low pressure between two sub-sections. A steam supply through the steam conducting system is possible for starting up the steam turbine such that a steam flow from the outgoing steam side to the connecting line to the region of low pressure is possible, an incoming steam feed line has a shut-off that can be controlled such that a steam flow from the incoming steam side to the connecting line to the region of low pressure. | 02-19-2015 |
| 20150068207 | STEAM TURBINE FACILITY AND METHOD OF OPERATING THE SAME - In one embodiment, a steam turbine facility includes drain piping in which a shut-off valve is provided, the drain piping being either a valve drain pipe that leads a drain from the main steam regulating valve to an outside thereof, or a casing drain pipe that leads a drain from the turbine casing to an outside thereof. A heat absorber disposed in a range, upstream of the shut-off valve, of the drain piping to absorb heat of the drain piping. | 03-12-2015 |
| 20150113988 | START-UP METHOD OF STEAM TURBINE PLANT - A start-up method of a steam turbine plant includes a first step and a second step. The first step is performed at an aeration start time. In the first step, a reheat steam pressure of an aeration boiler is set to be a reheat steam pressure required by a steam turbine or less. Besides, a reheat steam pressure of a standby boiler is set to be a reheat steam pressure required for the standby boiler or more. The second step is performed when a load of the steam turbine becomes a predetermined value. In the second step, the reheat steam pressure of the aeration boiler is increased to the same degree as the reheat steam pressure of the standby boiler. After that, steam from the aeration boiler and steam from the standby boiler are merged to be supplied to the steam turbine. | 04-30-2015 |
| 20150121871 | FORCED COOLING IN STEAM TURBINE PLANTS - A turbine plant ( | 05-07-2015 |
| 20150121872 | Steam Turbine Power Plant and Method for Activating Steam Turbine Power Plant - Providing a steam turbine power plant that can be safely activated at a high speed while maintaining thermal stress at a level equal to or lower than a limit in consideration of operational results of the plant, and a method for activating the steam turbine power plant. The steam turbine power plant includes a life consumption amount calculator | 05-07-2015 |
| 20150322821 | THERMAL ENERGY RECOVERY DEVICE AND START-UP METHOD OF THERMAL ENERGY RECOVERY DEVICE - A thermal energy recovery device includes a heater that evaporates a working medium by heat of a heat medium, an expander into which the working medium flowing out from the heater flows, a driving machine connected to the expander, a condenser that condenses the working medium flowing out from the expander by a cooling medium, a reservoir unit that reserves the working medium condensed in the condenser, a pump that feeds the working medium flowing out from the reservoir unit to the heater, a circulation flow passage of the working medium that connects the heater, the expander, the condenser, the reservoir unit, and the pump in this order, and a pump control unit that controls drive of the pump, and the pump control unit drives the pump after the heat medium is supplied to the heater and the cooling medium is supplied to the condenser. | 11-12-2015 |
| 20150330256 | THERMAL ENERGY RECOVERY DEVICE AND CONTROL METHOD - A thermal energy recovery device includes: a circulating flow path connected to a heater, an expander, a condenser and a circulating pump for circulating a working medium; a bypass valve in a bypass path connecting the upstream side region and the downstream side region of the expander in the circulating flow path; a power recovery machine connected to the expander; a circulating pump sending the working medium condensed in the condenser to the heater; a cooling medium pump sending a cooling medium to the condenser; an upstream side sensor detecting the pressure/temperature of the working medium on the expander upstream side in the circulating flow path; and a controller controlling the bypass valve and the cooling medium pump. The controller opens the bypass valve after stopping the circulating pump, and drives the cooling medium pump if the pressure/temperature of the working medium on the expander upstream side exceeds a threshold. | 11-19-2015 |
| 20160017757 | Device and Method for Operational and Safety Control of a Heat Engine - A device and a method are for the operational and safety control of a heat engine, which has a working-fluid path including a high-pressure path and a low-pressure path. The heat engine uses a condensable working fluid which, at least in part of the high-pressure path, is in the liquid phase. A fluid-drainage path, which is selectably open or closed, is connected to a portion of the high-pressure path in which the working fluid is mainly in the liquid phase. | 01-21-2016 |
| 20160017758 | MANAGEMENT OF WORKING FLUID DURING HEAT ENGINE SYSTEM SHUTDOWN - Provided herein are a heat engine system and a method for managing a working fluid in the heat engine system during an emergency shutdown. The heat engine system utilizes a working fluid (e.g., sc-CO2) contained within a working fluid circuit to absorb and transport heat. An inventory system is coupled to the working fluid circuit and configured to receive and store at least a portion of the working fluid in the working fluid circuit during an emergency shutdown process. An attemperation line is coupled to the working fluid circuit upstream one or more heat exchangers and configured to direct a portion of the working fluid flow around at least one or more heat exchangers, thereby managing the temperature of the working fluid in the working fluid circuit. | 01-21-2016 |
| 20160040558 | THERMAL POWER PLANT WITH A STEAM TURBINE - A thermal power plant has a primary heat supply, a steam generator, a steam turbine and an auxiliary gas turbine, wherein the primary heat supply is fluidically connected to the steam generator, wherein the auxiliary gas turbine is fluidically connected to the steam generator and is set up to keep the steam generator at a predefined minimum temperature when the primary heat supply is off-line, wherein a fan is encompassed, which fan is fluidically connected to the steam generator. A method is for the variable-power operation of such a thermal power plant, wherein the auxiliary gas turbine is brought on-line in dependence on an operating state of the primary heat supply, which is defined by the power to be provided by the latter. | 02-11-2016 |
| 20160160692 | METHOD FOR STARTING A STEAM TURBINE - The invention relates to a method for starting a steam turbine. The method involves pre-warming the steam turbine with a steam in which 65% of an energy used to pre-warming the steam turbine is derived from a latent heat energy of the steam. | 06-09-2016 |
| 20160251983 | DEVICE AND METHOD FOR RELIABLY STARTING ORC SYSTEMS | 09-01-2016 |
